General settings has a place to put the Business API key, but I believe Google has changed how this is configured and called in the JavaScript V3 libraries.

I am getting the Business Class API kit from Google at the end of this month and will be testing that as well as creating some new business class API add-on packs both as a “paid access” (for those not wanting to spend $20k+ but still need to geocode lots of locations) and as a “enter your own API key and get all the goodies” for people that have purchased the API.

I will be posting in the blog as I start work on the business class API elements of Google Maps.